Merge pull request #2 from jbt/master

Add site.asset() helper for inlining assets
v0.0.10 allow inline assets with site.asset() helper
copy unrecognised files to stop encoding issues with images etc
v0.0.11 copy unrecognised extensions directly
allow cancellation of generations so we can handle multiple file changes better
v0.0.12 better multi-filechange handling
allow asset_host option, log generation time
v0.0.13 asset_host + generation time log
use ejs2, over 10% faster at rendering a big site
no more ejs-templr
Merge pull request #4 from simontabor/ejs2

use ejs2 instead of ejs/ejs-templr
v0.1.0 using ejs2